Finding the Fourth Proportional to 314,798.10, 434,408.72 and 171,555.09
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Solution
The fourth proportional to 314,798.10, 434,408.72 and 171,555.09 is: 236,739.12
Step by Step Solution
- Step 1: Write the proportion equation
314,798.10 : 434,408.72 = 171,555.09 : x - Step 2: Convert to fraction form
314,798.10/434,408.72 = 171,555.09/x - Step 3: Cross multiply
314,798.10x = 434,408.72 × 171,555.09 - Step 4: Simplify right side
314,798.10x = 74,525,026,198.61 - Step 5: Solve for x
x = 74,525,026,198.61/314,798.10 - Step 6: Final answer
x = 236,739.12
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.